Patent US3640322A successfully refreshed from Google Patents.
US3640322A
Expired / Lapsed
US
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Nipper apparatus for harvesting trees
Assignee: Allen Inc SA
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Filing: 1970-06-26
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Granted: 1972-02-08
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Expires: 1990-06-26
Abstract
Abstract Nipper apparatus comprises a pair of pivotally mounted blades disposed in substantially the same plane and each having a straight cutting edge, a reinforcing rib disposed about the periphery of each of the blades and each rib being arranged with its ends disposed at the ends of the cutting edge of the associated blade so as to constitute an abutment for arresting cutting movement of the blades. Gripping claws are disposed immediately above the blades and serve to envelop and grip a tree to be cut, the gripping claws and blades being operated from a common source of fluid pressure.
Inventors
- 👤 C Andrew Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:48
CPC Classifications
A; A01; A01G; A01G23/00; A01G23/02; A01G23/08; A01G23/087; A01G23/089
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
127 words
Nipper apparatus comprising a pair of pivotally mounted flat blades of substantially uniform thickness throughout the major portion thereof and disposed in substantially the same plane, each of said blades having a substantially straight cutting edge, and a reinforcing rib disposed about the periphery of each of said blades and each rib having its ends disposed at the ends of the cutting edge of the associated blade and at least one end of each of said ribs constituting an abutment engageable with the corresponding end of the other of said ribs to determine the limits of travel of the cutting movement of said blades about their pivotal mountings, the pivotal mounting for each of said blades including an aperture formed in said blade and in said rib.
Claim 2
Dependent Claim
127 words
Nipper apparatus comprising a pair of pivotally mounted flat blades of substantially uniform thickness throughout the major portion thereof and disposed in substantially the same plane, each of said blades having a substantially straight cutting edge, and a reinforcing rib disposed about the periphery of each of said blades and each rib having its ends disposed at the ends of the cutting edge of the associated blade and at least one end of each of said ribs constituting an abutment engageable with the corresponding end of the other of said ribs to determine the limits of travel of the cutting movement of said blades about their pivotal mountings, the pivotal mounting for each of said blades including an aperture formed in said blade and in said rib.
Claim 3
Dependent Claim
58 words
Nipper apparatus according to claim 1 wherein the cross sectional dimension of said rib in a plane normal to the plane of the associated blade and in a direction parallel to the plane of said blade is greater than the cross sectional dimension thereof in said plane and in a direction normal to the plane of said blade.
Claim 4
Dependent Claim
49 words
Nipper apparatus according to the claim 2 wherein each of said blades is pivotally connected to a force applying motivating device by a pivotal connection which includes an aperture formed in said blade and in said rib and in spaced relation to the pivotal mountings for said blades respectively.
References Cited (Backward Citations)
US2697459A
Cited
US3183954A
Cited
US3533458A
Cited
US3527271A
Cited
US3498350A
Cited
US3540501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |